Crystal Oscillators

A crystal oscillator is a electromechanical device, it's also an electronic oscillator circuit. The main purpose of an oscillator is to make use of a quartz crystal as a frequency. Crystal oscillators use the mechanical resonance of a vibrating crystal, of which is made up from a piezoelectric material. This process allows the oscillator to create and obtain an electric signal with a high precision frequency.

Where Crystal Oscillators are used

This type of frequency is mostly used to keep track of time within a wrist watch or a digital integrated circuit, to provide a stable clock signal. This is where this signal gained it's commonly referred to name "clock signal". This clock signal is used to synchronise the operation of the other electronic devices that make up the system the oscillator is housed in. An oscillator is also used to help stabilise frequencies for radio transmitters and receivers, used in clocks (clock oscillator), computers and cell phones. Quartz crystal can also be found inside test and measurement equipment such as counters, signal generators and oscilloscopes.

A little more information on Crystal Oscillators

  • Crystal oscillators are known to be superior to ceramic resonators, this is for a multitude of reasons. They offer higher stability, they're higher quality and are considerably lower in cost and more compact in size.
  • Quartz crystals are manufactured for frequencies that range from a few tens of kilohertz all the way up to hundreds of megahertz.

Types of Crystal Oscillators

  • TCXO - These are used when a temperature stability is needed and can't be attained through a standard crystal oscillator (XO) or a voltage controlled crystal oscillator (VCXO).
  • OCXO - This is an oven controlled crystal oscillator, a type of oscillator that achieves the highest frequency stability that a quartz crystal can. They are designed to operate inside a temperature controlled oven, they are physically larger and require more power to run.
  • VCXO - This is a voltage controlled crystal oscillator, it controls the change in crystal output by using a DC (direct current) voltage.

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Description Price Oscillator Type Output Frequency Output Level Frequency Stability Mounting Type Package Type Minimum Operating Supply Voltage Maximum Operating Supply Voltage Pin Count Length Minimum Operating Temperature Width Height Maximum Operating Temperature
RS Stock No. 478-5799
Mfr. Part No.Q3204DC21028900
BrandEpson
kr 58,92
Each
Units
XO 25 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 173-2560
Mfr. Part No.Q3204DC21033300
BrandEpson
kr 17,467
Each (In a Tube of 35)
Units
XO 2 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 703-7129
Mfr. Part No.AS-16.000-18-SMD
BrandRALTRON
kr 5,972
Each (In a Bag of 10)
Units
- - - ±50ppm Surface Mount HC-49-US SMD - - 2 12mm -20 °C 4.8mm 4.6mm +70 °C
RS Stock No. 796-0536
Mfr. Part No.QX14T50B25.00000B50TT
BrandQANTEK
kr 18,34
Each
Units
XO 25 MHz HCMOS ±50ppm Through Hole DIP14 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 471-9461
Mfr. Part No.F4105-500
kr 9,57
Each
Units
XO 50 MHz HCMOS ±50ppm Surface Mount SMD 2.97 V 3.63 V - - -10 °C - 1.5mm +70 °C
RS Stock No. 478-6427
Mfr. Part No.Q3204DC21015900
BrandEpson
kr 26,82
Each
Units
XO 18.432 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 703-2102
Mfr. Part No.ASV-16.000MHZ-E-T
BrandAbracon
kr 12,203
Each (In a Bag of 10)
Units
XO 16 MHz HCMOS, TTL ±20ppm Surface Mount SMD 3 V 3.6 V - - -20 °C - 1.8mm +70 °C
RS Stock No. 173-2608
Mfr. Part No.Q3851CA00003812
BrandEpson
kr 14,123
Each (On a Reel of 250)
Units
XO 75 MHz CMOS ±50ppm Surface Mount SMD 3 V 3.6 V - - -10 °C - 1.2mm +70 °C
RS Stock No. 146-3919
Mfr. Part No.LFSPXO018044 831018044
BrandIQD
kr 7,426
Each (On a Reel of 1000)
Units
Clock 50 MHz HCMOS ±50ppm Surface Mount SMD - 3.3 V - - 0 °C - 1.4mm +70 °C
RS Stock No. 146-3974
Mfr. Part No.LFSPXO009686
BrandIQD
kr 11,041
Each (On a Reel of 1000)
Units
Clock 32.768 kHz CMOS ±50ppm Surface Mount SMD - 3.3 V - - -40 °C - 0.95mm +85 °C
RS Stock No. 667-6634
Mfr. Part No.Q3331H111000612
BrandEpson
kr 15,17
Each
Units
XO 100 MHz CMOS ±100ppm Surface Mount SMD 3 V 3.6 V - - -20 °C - 2.65mm +70 °C
RS Stock No. 173-4560
Mfr. Part No.F4105-500
kr 8,536
Each (On a Reel of 1000)
Units
XO 50 MHz HCMOS ±50ppm Surface Mount SMD 2.97 V 3.63 V - - -10 °C - 1.5mm +70 °C
RS Stock No. 667-6293
Mfr. Part No.Q3103JC01000111
BrandEpson
kr 17,15
Each
Units
XO 32.768 kHz CMOS ±50ppm Surface Mount JC 0.9 V 3.6 V - - -40 °C - 2.65mm +85 °C
RS Stock No. 173-2485
Mfr. Part No.X1G004481002812
BrandEPSON
kr 11,792
Each (On a Reel of 250)
Units
XO 14.3182 MHz CMOS - Surface Mount - 1.6 V 3.6 V - - - - 1.3mm -
RS Stock No. 111-0679
Mfr. Part No.KC7050A12.0000C30E00
BrandKYOCERA
kr 18,05
Each
Units
Clock 12 MHz CMOS ±50ppm Surface Mount CSMD 2.97 V 3.63 V - - -10 °C - 1.6mm +70 °C
RS Stock No. 707-9716
Mfr. Part No.COM2305-20.000-EXT
BrandRALTRON
kr 18,84
Each
Units
- 20 MHz HCMOS ±50ppm Surface Mount SMD 3 V 3.6 V - - -40 °C - 1mm +85 °C
RS Stock No. 904-7654
Mfr. Part No.X1G004171003012
BrandEPSON
kr 18,34
Each
Units
XO 22.5792 MHz CMOS - Surface Mount - 1.6 V 3.6 V - - -40 °C - 0.8mm +85 °C, +105 °C
RS Stock No. 904-7667
Mfr. Part No.X1G004171003512
BrandEPSON
kr 18,34
Each
Units
XO 27 MHz CMOS - Surface Mount - 1.6 V 3.6 V - - -40 °C - 0.8mm +85 °C, +105 °C
RS Stock No. 173-2486
Mfr. Part No.X1G004481003112
BrandEPSON
kr 11,792
Each (On a Reel of 250)
Units
XO 30 MHz CMOS - Surface Mount - 1.6 V 3.6 V - - - - 1.3mm -
RS Stock No. 178-2583
Mfr. Part No.636L3I024M00000
BrandCTS
kr 12,961
Each (In a Pack of 10)
Units
Clock 24 MHz HCMOS, TTL ±50ppm Surface Mount SMD 2.97 V dc 3.63 V dc - - -40 °C - 1.3mm +85 °C
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